Adrian Sanchez Soto thinks this is interesting:

From the perspective of a developer working with Autoconf, you create
a file configure.ac to be the input for
Autoconf. configure.ac (which used to be named
configure.in) is written in a mixture of GNU
m4 (a macro processing language) and Unix shell
commands. However, you need to ship only the generated
configure file, not its precursors.

Get Instant Access Now

Unlock the rest of Practical Development Environments
and 30,000 other books and videos

By clicking this box, you confirm that you have read and agree to the terms and conditions of our Membership Agreement, and you understand that when your trial period ends, you will be required to provide billing information if you wish to continue using the service.